calculate.mean.detection.prob {distance.sample.size} | R Documentation |
Calculates the mean detection probability over the range of observation.
calculate.mean.detection.prob(theta = theta, w, detection.function)
theta |
The detection function parameters. A single value for halfnormal, or a vector of two values for hazard rate. |
w |
The maximum range of observation. Objects at distance greater than w from the observer are assumed to never be recorded. |
detection.function |
The detection function. Only "halfnormal" and "hazard" (hazard rate) are supported at present. |
The mean detection probability over the distance range [0,w].
Buckland S, Anderson D, Burnham K, Laake J and Borchers D (2001). Introduction to Distance Sampling: Estimating Abundance of Biological Populations. Oxford: Oxford University Press.
Clark, R. G. (2016), "Statistical efficiency in distance sampling," PLoS One, forthcoming, www.plosone.org
calculate.mean.detection.prob(detection.function="hazard",theta=c(0.448,2),w=1) # should be 0.6